Manual de uso Danby DAC120EB8WDB Aire acondicionado

Manual de uso

SAVE THESE INSTRUCTIONS!

Important Safety Information

READ AND FOLLOW ALL SAFETY INSTRUCTIONS

Removal and evacuation

When breaking into the refrigerant circuit to make repairs or for any other purpose conventional

procedures shall be used. However, it is important that the best practice is followed since fl ammability is a

consideration. The following procedures shall be adhered to:

• Remove refrigerant.

• Purge the circuit with inert gas.

• Evacuate.

• Purge again with inert gas.

• Open the circuit by cutting or brazing.

• The refrigerant charge shall be recovered into the correct recovery cylinders. The system shall be

fl ushed with OFN to render the unit safe. This process may need to be repeated several times.

Compressed air or oxygen shall not be used for this task.

• Flushing shall be achieved by breaking the vacuum in the system with OFN and continuing to fi ll until

the working pressure is achieved, then venting to atmosphere and fi nally pulling down to a vacuum.

This process shall be repeated until no refrigerant is within the system. When the fi nal OFN charge

is used, the system shall be vented down to atmospheric pressure to enable work to take place. This

operation is absolutely vital is brazing operations on the pipe-work are to take place.

• Ensure that the outlet for the vacuum pump is not close to any ignition sources and there is ventilation

available.

Charging procedures

In addition to conventional charging procedures, the following requirements shall be followed:

• Ensure that contamination of different refrigerants does not occur when using charging equipment.

Hoses or lines shall be as short as possible to minimize the amount of refrigerant contained in them.

• Cylinders shall be kept upright.

• Ensure that the refrigeration system is earthed prior to charging the system with refrigerant.

• Label the system when charging is complete, if not already labeled.

• Extreme care shall be taken not to overfi ll the refrigeration system.

• Prior to recharging the system it shall be pressure tested with OFN. The system shall be leak tested on

completion of charging but prior to commissioning. A follow up leak test shall be carried out prior to

leaving the site.

Decommissioning

Before carrying out this procedure, it is essential that the technician is completely familiar with the

equipment in all its detail. It is recommended good practice that all refrigerants are recovered safely. Prior

to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required

prior to re-use of reclaimed refrigerant. It is essential that electrical power is available before the task is

commenced.

A. Become familiar with the equipment and its operation.

B. Isolate system electrically.

C. Before attempting the procedure ensure that:

• Mechanical handling equipment is available if required for handling refrigerant cylinders.

• All personal protective equipment is available and being used correctly.

• The recovery process is supervised at all times by a competent person.

• Recovery equipment and cylinders conform to the appropriate standards.

D. Pump down refrigerant system, if possible.

E. If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of

the system.

F. Make sure that cylinder is situated on the scales before recovery takes place.

G. Start the recovery machine and operate in accordance with the manufacturer’s instructions.

H. Do not overfi ll cylinders. No more than 80% volume liquid charge.

I. Do not exceed the maximum working pressure of the cylinder, even temporarily.

J. When the cylinders have been fi lled correctly and the process is completed, make sure that the cylinders

and the equipment are removed from the site promptly and all isolation valves on the equipment are

closed off.

K. Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned

and checked.

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